This pump is good value for money. The announced rate of 6000 l / h is the maximum estimated flow rate. In fact, the rate varies according to the pipe height, eg for a height of 1 meter the flow rate is 4000l per hour, to 2 m max 2800 the time for 4m 800l per hour. The pump can drop to a maximum depth of 7 m (albeit informed 5m H max ???). It is suitable for clear water and lightly loaded. the rate also varies according to the pipe which is adapted to pump 13 mm 38mm, cut the sleeve if you choose a format other than 25 mm, while specifying that the 38 mm diameter is recommended for best performance. We must plan for Gardena accessories depending on the size of the pipe chosen. Once the pipe connection is made you plug the pump releasing the float is immersed all and it gets going. I bought 27 euros cheaper than at Brico thank you Amazon